Using Perian to view AVI, DivX and WMV files in QuickTime

QuickTime on Snow Leopard is better than ever; lighter, faster and better for watching videos. But if QuickTime Player can’t open the movie, what good is it? Perian is a must-have tool that allows QuickTime to play many more formats, including (but not limited to) AVI, DIVX, FLV. An open-source program, it also works in any program that uses QuickTime, so with it you can watch a large number of file formats on Front Row.